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Analysis in in situ prepared surfaces of an iron oxide based dehydrogenation catalyst
Author(s) -
Muhler M.,
Schlögl R.,
Ertl G.
Publication year - 1988
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740120402
Subject(s) - catalysis , dehydrogenation , potassium hydroxide , x ray photoelectron spectroscopy , oxide , potassium carbonate , chemistry , phase (matter) , ternary operation , in situ , hydroxide , inorganic chemistry , chemical engineering , organic chemistry , computer science , engineering , programming language
An X‐ray photoelectron spectroscopic study is presented for an industrial catalyst surface, which is in its active form only accessible after reaction under technical conditions. A high pressure‐high temperature reactor was attached to a surface analysis system. It allowed rapid transfer of a sample between the reaction environment and the UHV required for surface analysis. The active phase was identified as a ternary iron potassium oxide. No evidence was found for the previously suggested presence of a binary potassium hydroxide or carbonate phase in solid or liquid form. A new model of the active catalyst is proposed.